Empecher l'utilisateur de consommer s'il a gardé trop de pintes

gestion/migrations/0004_auto_20181223_1830.py

@@ -0,0 +1,25 @@
+# Generated by Django 2.1 on 2018-12-23 17:30
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('gestion', '0003_historicalpinte'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='pinte',
+            name='current_owner',
+            field=models.ForeignKey(default=None, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='pintes_owned_currently', to=settings.AUTH_USER_MODEL),
+        ),
+        migrations.AlterField(
+            model_name='pinte',
+            name='previous_owner',
+            field=models.ForeignKey(default=None, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='pintes_owned_previously', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

gestion/models.py

@@ -230,7 +230,7 @@ class Pinte(models.Model):
     """
     Stores a physical pinte
     """
-    current_owner = models.ForeignKey(User, on_delete=models.PROTECT, null=True, default=None, related_name="pinte_owned_currently")
-    previous_owner = models.ForeignKey(User, on_delete=models.PROTECT, null=True, default=None, related_name="pinte_owned_previously")
+    current_owner = models.ForeignKey(User, on_delete=models.PROTECT, null=True, default=None, related_name="pintes_owned_currently")
+    previous_owner = models.ForeignKey(User, on_delete=models.PROTECT, null=True, default=None, related_name="pintes_owned_previously")
     last_update_date = models.DateTimeField(auto_now=True)
     history = HistoricalRecords()

gestion/views.py

@@ -15,7 +15,7 @@ from decimal import *
 
 from .forms import ReloadForm, RefundForm, ProductForm, KegForm, MenuForm, GestionForm, SearchMenuForm, SearchProductForm, SelectPositiveKegForm, SelectActiveKegForm, PinteForm
 from .models import Product, Menu, Keg, ConsumptionHistory, KegHistory, Consumption, MenuHistory, Pinte
-from preferences.models import PaymentMethod
+from preferences.models import PaymentMethod, GeneralPreferences
 
 @active_required
 @login_required
@@ -108,6 +108,7 @@ def order(request):
         order = json.loads(request.POST["order"])
         menus = json.loads(request.POST["menus"])
         listPintes = json.loads(request.POST["listPintes"])
+        gp,_ = GeneralPreferences.objects.get_or_create(pk=1)
         if (not order) and (not menus):
             return HttpResponse("Pas de commande")
         adherentRequired = False
@@ -119,14 +120,20 @@ def order(request):
             adherentRequired = adherentRequired or menu.adherent_required
         if(adherentRequired and not user.profile.is_adherent):
             return HttpResponse("N'est pas adhérent et devrait l'être")
+        # Partie un peu complexe : je libère toutes les pintes de la commande, puis je test
+        # s'il a trop de pintes non rendues, puis je réalloue les pintes
+        for pinte in listPintes:
+            allocate(pinte, None)
+        if(gp.lost_pintes_allowed and user.profile.nb_pintes >= gp.lost_pintes_allowed):
+            return HttpResponse("Impossible de réaliser la commande : l'utilisateur a perdu trop de pintes.")
+        for pinte in listPintes:
+            allocate(pinte, user)
         if(paymentMethod.affect_balance):
             if(user.profile.balance < amount):
                 return HttpResponse("Solde inférieur au prix de la commande")
             else:
                 user.profile.debit += amount
                 user.save()
-        for pinte in listPintes:
-            allocate(pinte, user)
         for o in order:
             product = get_object_or_404(Product, pk=o["pk"])
             quantity = int(o["quantity"])

preferences/migrations/0003_auto_20181223_1440.py

@@ -0,0 +1,23 @@
+# Generated by Django 2.1 on 2018-12-23 13:40
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('preferences', '0002_auto_20181221_2151'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='generalpreferences',
+            name='lost_pintes_allowed',
+            field=models.PositiveIntegerField(default=0),
+        ),
+        migrations.AddField(
+            model_name='historicalgeneralpreferences',
+            name='lost_pintes_allowed',
+            field=models.PositiveIntegerField(default=0),
+        ),
+    ]

preferences/models.py

@@ -31,6 +31,7 @@ class GeneralPreferences(models.Model):
     brewer = models.CharField(max_length=255, blank=True)
     grocer = models.CharField(max_length=255, blank=True)
     use_pinte_monitoring = models.BooleanField(default=False)
+    lost_pintes_allowed = models.PositiveIntegerField(default=0)
     history = HistoricalRecords()
 
 class Cotisation(models.Model):

preferences/templates/preferences/general_preferences.html

@@ -5,7 +5,7 @@
 	<li><a href="#first">Message global</a></li>
 	<li><a href="#second">Site actif</a></li>
 	<li><a href="#third">Bureau</a></li>
-	<li><a href="#fourth">Autre</a></li>
+	<li><a href="#fourth">Suivi de pintes</a></li>
 </ul>
 {% endblock %}
 
@@ -83,12 +83,18 @@
 		<div class="spotlight">
 			<div class="content">
 				<header class="major">
-					<h2>Autre</h2>
+					<h2>Suivi de pintes</h2>
 				</header>
 				<div class="row uniform">
 					<div class="12u">
 						{{form.use_pinte_monitoring}}
-						<label for="{{form.is_active.id_for_label}}">Utiliser le suivi de pinte ?</label>
+						<label for="{{form.use_pinte_monitoring.id_for_label}}">Utiliser le suivi de pinte ?</label>
+					</div>
+				</div>
+				<div class="row uniform">
+					<div class="12u">
+						{{form.lost_pintes_allowed}}
+						<label for="{{form.lost_pintes_allowed.id_for_label}}">Nombre de pintes non rendues avant d'interdire la consommation (0 pour ne jamais l'interdire, nécessite le suivi de pinte actif)</label>
 					</div>
 				</div>
 				<div class="row uniform">

users/models.py

@@ -119,6 +119,13 @@ class Profile(models.Model):
             alcohol += consumption.quantity * float(product.deg) * product.volume * 0.79 /10 /1000
         return alcohol
 
+    @property
+    def nb_pintes(self):
+        """
+        Return the number of pintes currently owned
+        """
+        return self.user.pintes_owned_currently.count()
+
     def __str__(self):
         return str(self.user)
 
@@ -127,6 +134,9 @@ class Profile(models.Model):
         Tente de retourner l'attribut de l'instance et si l'attribut n'existe pas,
         tente de retourner l'attribut de l'user associé à l'instance
         """
+        try:
+            r = self.__getattribute__(name)
+        except AttributeError:
             try:
                 r = super().__getattr__(name)
             except AttributeError: